Tower chair series products adopt the design concept of "elasticnylon chair back design structure" and "chair back swing and lift"Whether the user sits down, works or leans back, the waist pillowwill automatically adjust according to the change of personalshape and working posture, giving the user the most comfortablesupport for the waist back. At the same time can reach the side ofthe movement and the side of the work arbitrany switch.